#include<iostream>
using namespace std;
double warming =0.3;

void update(double dt); 
void local();

int main()
{
	cout<<"Global warming is "<<warming <<" degrees.\n";
	update(0.1);
	cout<<"Global warming is "<<warming <<" degrees.\n";
	local();
	cout<<"Global warming is "<<warming <<" degrees.\n";
	return 0;
}
